Auxiliary device for assembling snap spring

Abstract

The invention relates to an auxiliary device for assembling a snap spring. The auxiliary device comprises a shell, a driving mechanism arranged in the shell and an action mechanism connected with the driving mechanism. The housing defines a channel for receiving the snap spring. And the actuating mechanism extends into the channel from the shell. Wherein the driving mechanism is configured to enable the action mechanism to compress the snap spring after the action mechanism is jointed with the snap spring, so that acting force is relatively uniformly applied to the snap spring, the snap spring can be completely contracted, and the assembly quality is ensured. Moreover, in the whole assembling process, technicians only need to operate the driving mechanism, so that the technicians can be far away from the pressing head of the hydraulic machine as far as possible, and the safety during assembling is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of tool assembly technology, and more specifically to an auxiliary device for assembling snap rings. Background Technology

[0002] Currently, in the assembly of cementing tools involving sliding sleeves with retaining rings, to ensure product quality and assembly efficiency, the retaining ring must first be installed into the inner sleeve with the retaining ring groove. Then, the inner sleeve with the retaining ring pre-installed is placed into the outer sleeve. Finally, a hydraulic press is used to press the inner sleeve into the outer sleeve, thus completing the assembly. During this assembly process, due to design requirements, the pre-installed retaining ring cannot fully retract into the retaining ring groove of the inner sleeve and protrudes beyond the maximum outer diameter of the inner sleeve. This necessitates measures to ensure the retaining ring fully retracts into place just before entering the outer sleeve during the hydraulic press's downward pressure. Typically, this measure is performed manually by technicians.

[0003] Because it requires the use of a hydraulic press for pressing, there is an extremely high safety risk for technicians when performing manual operations, and it is difficult to guarantee the assembly quality of the inner and outer sleeves. Summary of the Invention

[0004] In view of the above-mentioned problems in the prior art, the present invention provides an auxiliary device for assembling snap rings, which enables the snap rings to retract completely into the inner sleeve when pressed down by a hydraulic press, thereby reducing the operational risks for technicians and improving the assembly quality.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to provide an auxiliary device for assembling a retaining ring, including a housing, a drive mechanism disposed within the housing, and an actuating mechanism connected to the drive mechanism. The housing defines a channel for receiving the retaining ring. The actuating mechanism extends from the housing into the channel. The drive mechanism is configured to compress the retaining ring after the actuating mechanism engages with it.

[0006] Furthermore, the actuation mechanism includes a plurality of paddles connected to the drive mechanism, the drive mechanism being configured to reduce the size of the inscribed circle defined by the plurality of paddles, thereby enabling the plurality of paddles to compress the retaining ring together.

[0007] Furthermore, each of the paddles includes a first end hinged to the follower of the drive mechanism and a second end for engaging with the snap ring. Each of the paddles is also hinged to the inner wall of the housing so that the inscribed circle defined by the plurality of paddles can decrease as the first end rotates with the follower.

[0008] Furthermore, a first opening is provided on the inner sidewall so that the paddle extends from the housing into the channel, and each paddle is hinged to the inner sidewall via a second hinge rod at the first opening.

[0009] Furthermore, the driven member is provided with a mounting groove for accommodating the first end of each of the paddles.

[0010] Furthermore, the first end of each of the paddles is hinged to the driven member via a third hinge rod in the mounting groove.

[0011] Furthermore, the driven member is a toothed ring with outer teeth.

[0012] Furthermore, the driving mechanism includes a driving member, which is connected to the driven member in a transmission manner.

[0013] Furthermore, the driving member includes a body that is pulsatorically connected to the driven member, and a control rod disposed on the body, the control rod extending out of the housing so as to rotate the driving member.

[0014] Furthermore, the active component is hinged to the bottom wall of the housing via a first hinge rod.

[0015] The beneficial effects of this invention are as follows: This invention provides an auxiliary device for assembling retaining rings, comprising a housing, a drive mechanism disposed within the housing, and an actuating mechanism connected to the drive mechanism. The housing defines a channel for receiving the retaining ring. The actuating mechanism extends from the housing into the channel. The drive mechanism is configured to compress the retaining ring after the actuating mechanism engages with it, thereby applying a relatively uniform force to the retaining ring, ensuring complete retraction and guaranteeing assembly quality. Furthermore, throughout the assembly process, technicians only need to operate the drive mechanism, allowing them to stay as far away from the hydraulic press head as possible, thus effectively improving safety during assembly. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 The image shown is a structural cross-sectional view of an auxiliary device for assembling snap rings.

[0018] Figure 2 As shown Figure 1 The diagram shows the structural structure of the housing of the auxiliary device.

[0019] Figure 3 As shown Figure 1 The diagram shows the structure of the cover plate of the auxiliary device.

[0020] Figure 4 As shown Figure 1 The diagram shows the structure of the active component of the auxiliary device.

[0021] Figure 5 As shown Figure 1 The diagram shows the structure of the driven component of the auxiliary device.

[0022] Figure 6 As shown Figure 1 The diagram shows the structure of the paddle of the auxiliary device.

[0023] In the figures, the following reference numerals are used: 100, auxiliary device; 10, housing; 11, inner sidewall; 111, first opening; 12, outer sidewall; 121, second opening; 13, bottom wall; 14, channel; 15, chamber; 16, cover plate; 20, drive mechanism; 21, driving member; 211, body; 212, control rod; 213, first hinge rod; 22, driven member; 221, mounting groove; 30, actuation mechanism; 31, paddle; 311, first end; 312, second end; 313, second hinge rod; 314, third hinge rod. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic structure of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] refer to Figure 1 As shown, the present invention provides an auxiliary device 100 for assembling a retaining ring, which is generally annular in structure and can be fitted onto an inner sleeve and a retaining ring. The auxiliary device 100 includes a housing 10, a drive mechanism 20 disposed within the housing 10, and an actuation mechanism 30 connected to the drive mechanism 20. The housing 10 defines a channel 14 for receiving the retaining ring. The actuation mechanism 30 extends from within the housing 10 into the channel 14 so that the actuation mechanism 30 can engage the retaining ring when the auxiliary device 100 is fitted onto the inner sleeve, thereby compressing the retaining ring under the driving action of the drive mechanism 20, ensuring that the retaining ring is fully retracted into the retaining ring groove on the inner sleeve.

[0026] Combination Figure 1 and Figure 2As shown, in some embodiments, the housing 10 has an overall annular structure. The housing 10 includes an annular inner wall 11, an outer wall 12 coaxially arranged with the inner wall 11, and a bottom wall 13 connecting the inner wall 11 and the outer wall 12. The annular inner wall 11 defines a circular channel 14. The inner wall 11, outer wall 12, and bottom wall 13 together define an annular chamber 15 for accommodating the drive mechanism 20. The inner wall 11 has a plurality of first openings 111 for mounting the actuating mechanism 30. The outer wall 12 has second openings 121.

[0027] Combination Figure 1-3 As shown, in some embodiments, a cover plate 16 is also provided on the housing 10. The cover plate 16 is arranged opposite to the bottom wall 13 and connects the inner side wall 11 and the outer side wall 12. By providing the cover plate 16, external debris can be effectively prevented from entering the chamber 15, and malfunctions such as jamming of the drive mechanism 20 in the chamber 15 can be prevented. It is easy to understand that the cover plate 16 can be connected to the inner side wall 11 and the outer side wall 12 by welding, bolting, or other means.

[0028] refer to Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the drive mechanism 20 includes an active member 21 disposed at the second opening 121 and a driven member 22 drivenly connected to the active member 21 within the chamber 15. The active member 21 is configured to allow the driven member 22 to rotate within the chamber 15 under the operation of a technician, thereby causing the actuation mechanism 30 to produce a corresponding action. It should be understood that the active member 21 may also be connected to a drive device such as a linear motor or a cylinder.

[0029] In some embodiments, the driving member 21 includes a body 211 located within the chamber 15 and a control rod 212 connected to the body 211. The body 211 is hinged to the bottom wall 13 so that the body 211 can rotate relative to the bottom wall 13 when the control rod 212 moves. Specifically, the body 211 is hinged to the bottom wall 13 via a first hinge rod 213. A driving tooth is provided on the side of the body 211 opposite to the control rod 212 for driving connection of the driven member 22. The control rod 212 extends from the second opening 121 to facilitate operation by a technician. By providing the control rod 212, technicians can be kept as far away from the hydraulic press head as possible when installing the retaining ring, thereby effectively reducing operational risks and improving safety.

[0030] Combination Figure 1 and Figure 5As shown, in some embodiments, the driven member 22 is a toothed ring with outer teeth. The outer teeth on the driven member 22 mesh with the driving teeth of the driving member 21, so that the driven member 22 can rotate when the driving member 21 rotates. The inner edge of the driven member 22 is provided with mounting grooves 221 corresponding one-to-one with a plurality of first openings 111 for mounting the actuating mechanism 30. Figure 1 As shown, when the technician rotates the driving member 21 counterclockwise relative to the bottom wall 13 using the control lever 212, the driven member 22 rotates clockwise relative to the bottom wall 13.

[0031] refer to Figure 1 and Figure 6 As shown, in some embodiments, the actuating mechanism 30 includes a paddle 31 disposed at each of the first openings 111. The paddle 31 includes a first end 311 located within the chamber 15 and a second end 312 located within the channel 14 for engaging a retaining ring. The paddle 31 is hinged to the inner wall 11 and the follower 22 such that the paddle 31 can rotate relative to the inner wall 11 when the follower 22 rotates. Specifically, the paddle 31 is hinged to the inner wall 11 via a second hinge rod 313 at the first opening 111, and the first end 311 of the paddle 31 is hinged to the follower 22 via a third hinge rod 314 within the mounting slot 221.

[0032] like Figure 1 As shown, in some embodiments, when the follower 22 rotates clockwise relative to the bottom wall 13, the follower 22 drives the first end 311 of the lever 31 to rotate clockwise. At this time, the second end 312 of the lever 31 rotates clockwise relative to the inner wall 11 with the second hinge rod 313 as the center. Thus, the inscribed circle defined by each lever 31 within the channel 14 ( Figure 1 The size of the circles tangent to each of the paddles 31 gradually decreases. This allows each paddle 31 to compress the retaining ring radially inward when engaged with it, ensuring the retaining ring fully retracts into the retaining ring groove on the inner sleeve. The paddles 31 apply force to the retaining ring relatively evenly, thereby improving the assembly quality of the retaining ring.

[0033] When the driven member 22 rotates counterclockwise relative to the bottom wall 13, it drives the first end 311 of the paddle 31 to rotate counterclockwise. At this time, the second end 312 of the paddle 31 rotates counterclockwise relative to the inner wall 11 with the second hinge rod 313 as the center. As a result, the size of the inscribed circle defined by the inner recess of each paddle 31 in the channel 14 gradually increases. This ensures that the retaining ring on the inner sleeve is located between each paddle 31, ensuring that each paddle 31 can engage the retaining ring.

[0034] In this embodiment, each paddle 31 is approximately arc-shaped. Furthermore, each paddle 31 is rotationally symmetrical about the center of the circle containing the inner sidewall 11. The actuation mechanism 30 includes three paddles 31, which are evenly arranged along the circumferential direction of the inner sidewall 11, so that the three paddles 31 can apply a relatively uniform force to the retaining spring during assembly, ensuring assembly quality.

[0035] In some other embodiments not shown, the actuation mechanism 30 may include four, five or more paddles 31.

[0036] In this embodiment, the length of the first end 311 of each paddle 31 is less than the length of the second end 312. When the first end 311 of the paddle 31 rotates a small distance with the follower 22, the second end 312 of the paddle 31 can rotate a larger distance. Thus, the second end 312 of the paddle 31 has a large range of motion. This allows the auxiliary device 100 to be suitable for mounting various sizes of retaining rings.

[0037] In some other embodiments not shown, where size permits, the length of the first end 311 of each paddle 31 can be greater than the length of the second end 312. When the first end 311 of the paddle 31 rotates a large distance with the follower 22, the second end 312 of the paddle 31 can rotate a smaller distance. Thus, the second end 312 of the paddle 31 can exert a larger force on the retaining ring. This allows the auxiliary device 100 to be suitable for mounting retaining rings with high rigidity.

[0038] In some other embodiments not shown, by adaptively adjusting the transmission ratio between the driving member 21 and the driven member 22, and the length ratio between the first end 311 and the second end 312 of the paddle 31, the force required to rotate the driving member 21, the force of the paddle 31 on the snap ring, and the range of movement of the second end 312 of the paddle 31 can all meet the corresponding requirements, thereby further improving the applicability of the auxiliary device 100.

[0039] Combination Figure 1-6 The following is a detailed explanation of the usage process of the auxiliary device 100.

[0040] Technicians use the control lever 212 of the driving member 21 to rotate the driven member 22, causing the driven member 22 to rotate each paddle 31. This increases the size of the inscribed circle defined by each paddle 31 within the channel 14, ensuring that the retaining ring on the inner sleeve is positioned between each paddle 31. Then, the driven member 22 is rotated in the opposite direction by the control lever 212 of the driving member 21, decreasing the size of the inscribed circle defined by each paddle 31 within the circular channel 14, ensuring that each paddle 31 engages with the retaining ring. The retaining ring is then compressed radially inward by the driving member 21 and the driven member 22, causing the retaining ring to fully retract into the retaining ring groove on the inner sleeve. Finally, the pressure head of a hydraulic press is used to press the inner sleeve and retaining ring into the outer sleeve, thus completing the assembly.

[0041] During the above process, each lever 31 can simultaneously compress the retaining ring, thereby applying a relatively uniform force to the retaining ring and ensuring that it can fully retract, thus guaranteeing assembly quality. Furthermore, throughout the entire process, technicians only need to operate the control lever 212, avoiding direct contact with the retaining ring and allowing them to stay as far away from the hydraulic press head as possible, effectively improving safety during assembly.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0044] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An auxiliary device for assembling snap rings, comprising: The housing (10) defines a channel (14) for receiving the retaining ring. The drive mechanism (20) is disposed within the housing (10); and An actuating mechanism (30) is connected to the driving mechanism (20), and the actuating mechanism (30) extends from the housing (10) into the channel (14). in, The drive mechanism (20) is configured to compress the retaining ring after the actuation mechanism (30) engages with the retaining ring.

2. The auxiliary device for assembling snap rings according to claim 1, characterized in that, The actuation mechanism (30) includes a plurality of paddles (31) connected to the drive mechanism (20), the drive mechanism (20) being configured to reduce the size of the inscribed circle defined by the plurality of paddles (31), thereby enabling the plurality of paddles (31) to compress the retaining ring together.

3. The auxiliary device for assembling snap rings according to claim 2, characterized in that, Each of the paddles (31) includes a first end (311) hinged to the follower (22) of the drive mechanism (20) and a second end (312) for engaging with the snap ring. Each of the paddles (31) is also hinged to the inner wall (11) of the housing (10) so that the inscribed circle defined by the plurality of paddles (31) can decrease as the first end (311) rotates with the follower (22).

4. The auxiliary device for assembling snap rings according to claim 3, characterized in that, The inner sidewall (11) is provided with a first opening (111) so that the paddle (31) extends from the housing (10) into the channel (14) and each paddle (31) is hinged to the inner sidewall (11) through a second hinge rod (313) at the first opening (111).

5. The auxiliary device for assembling snap rings according to claim 3, characterized in that, The driven member (22) is provided with a mounting groove (221) for accommodating the first end (311) of each of the paddles (31).

6. The auxiliary device for assembling snap rings according to claim 5, characterized in that, The first end (311) of each of the aforementioned paddles (31) is hinged to the follower (22) via a third hinge rod (314) in the mounting groove (221).

7. The auxiliary device for assembling snap rings according to claim 5, characterized in that, The driven member (22) is a toothed ring with outer teeth.

8. The auxiliary device for assembling snap rings according to any one of claims 3-7, characterized in that, The drive mechanism (20) includes a driving member (21), which is connected to the driven member (22) in a transmission manner.

9. The auxiliary device for assembling snap rings according to claim 8, characterized in that, The driving member (21) includes a body (211) that is throttle connected to the driven member (22), and a control rod (212) disposed on the body (211), the control rod (212) extending out of the housing (10) so as to rotate the driving member (21) by means of the control rod (212).

10. The auxiliary device for assembling snap rings according to claim 9, characterized in that, The active component (21) is hinged to the bottom wall (13) of the housing (10) via the first hinge rod (213).

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